The unoffical relationship of two people developed through sexting. Flirting, hooking up, and sexting a person but not being officially in a relationship. Similar to a fuck buddy but has emotional elements of a relationship as well even though neither party will admit it.
A: "So are you two in a relationship?"
B: "NOOOO! WE ARE NOT!"
A: "But you guys sext and hook up right?"
B: "Well yeah but it is definitely not a relationship"
A: "So its a sextlationship!"
Antonym to rape, its the state of forced sexual inactivity, or being sexually inactive contrary to your desire. AKA being cut off from the funbits of your gender of choice.
sex+castration
Josh: *Sigh* My life is a perpetual state of sexstration.